Muffler cut-out mechanism.



L. s. GHADWIGK. MUFFLER GUT-OUT-VMEGHAN'ISM.

APPLICATION FILBD' MAB. 8, 1 909.

' 2 SHEBTE-SHEET '1.

Patented May 25, 1909.

Lee S. Chad/wick Magi L. S. GHADWIGK. MUFFLER GUT-GUT MECHANISM. APPLICATION FILED MAE.8, 1909.

Patented May 25, 1909.

2 SHEETS-SHEET 2.

M QW 7 Lee S Chadwick,

g is a specification.

LEE sioHADwIoK, or PorTs'rroWN, PENNSYLVANIA.

MUFFLER GUT-OUT imcnamsm To. all whom it may concern:

Be it known that I,.'Lnn S. CHADWIGK, citizen of the United States, residing at Pottstown, Pennsylvania, have invented oertain new and useful Improvements in Muffler Cut-Out Mechanism, of which the following My invention relates mufller cut out mechanism for automobiles driven by internal combustion engines.

Among the objects of the invention are to provide a perfectlymufiled car that can be readily converted into a racing car absolutely. free from back pressure in the exhaust,"

thereby securing. maximum power to provide-a-cut-o'ut that can be easily opened and in amanner which will permit of the operator-testing the firing of each cylinder without removing the exhaust manifold; and-to protight joints may be secured, andthe valves invention includes the novel features of con-.

vide-a valve arrangement by which perfectly regr'ound, when necessary, without removing the'manifold or valves from their position on the engine.

. ith these and other objectsin view, the

structionand arrangement and combination .of parts hereinafter describedand particularlyf pointed out in the claims.

- The invention is illustrated in the accom panying drawings, in which,

. Figure 1 is a side elevation showing the exhaust manifold and attached parts, the exhaust pipe and part of the mufiier, and the operating pedal with its connections to the valves, thecylinders and automobile frame andbody being omitted for clearness of illustration ofthe parts constituting the present invention. Fig. 2 is an enlarged view of one of the exhaust outlets, and Fig. 3 is a transverse sectional view taken centrally through the outlet port of'Fig. 2 and through one of the cylinders to show the relative'arrangement of,the parts.

Referring by reference characters to these figures, the numeral 4. designates the exhaust manifold and 5 the exhaust pipe connecting the'manifold with the muifler 6 of theordinary or any desired construction. The main-- fold 4 is connected in the ordinary or any desired manner to the exhaust ports of the engine cylinders as clearly shown in Fig. 3 in which 7 designates the cylinder,-8 the in- 1 let valve, and 9 the exhaust valve. The manifold is provided, opposite each connection 9*,

' With the exhaust port, with'a port or passage Specification of Letters'Patent.

to improvements in I "the valves.

Patented ma 25, 1909.

Application filed HarchB, 191 19. -Seri a1 N-o.-4B2,(l68.

discharging directly into theopen air. This port or' passage is preferably formed by a pipe: 10 arranged to discharge through an opening in the' engine hood, aportion of -which is shown at 11. A I .Atthe juncture of eachpipe .10 with the "manifold-is provided a valve seat 12, against which -seats a valve 13 which is carriedby an arm 14 mountedonarock-sha-ft 15 extending longitudinally of the manifold beneath. all The. valves are normally held closed by the action of one or more-springs 16' having their opposite ends connected respectively .to devices such as eye pieces 17 and 18 on the arm 14 and-enginerespect-ively.

vTh-erock shaft 15 is rotated on its axis to open the valves and permit the engine-cylinders to exhaust directly through pipes 10into the open air by a bell crank lever which has onearm '19' connected by a link 20 with an arm 21 on the rock-shaft, theother arm 22 opening in the guide plate 26 for retaining the valves in open position;

It will be observed that as the valves are opened they. are swung inward and down- Ward until they rest in the bottom of the being connected to any suitable 'dev'i'ce within shoulder 23 for engaging the edge of the manifold in the position shown in dotted J lines in Fig. 3, leaving structed passage for the exhaust. When; however, the valves are seated, the pressure of the exhaust gases tends to force them even more'tightly against their seats, thus avoiding any danger of leakage.

In order'to enable the valves to be readily ground when necessary, each valve is rotataly connected to'its carrying arm by fastening it securely on the inner end of a pin 27 which is journaled in the end of the arm 14, the head of the pin being provided with a notch 27 for the engagement of a screw driver or like tool by which the valve may be rotated upon its seat without disconnecting any of the parts.

of cylinders. l/Vith six cylinder engines, it is not absolutely necessary to provide an exfree and unobhau st pipe for each cylinder, as I might provide three exhaust pipes 10, one for each pair of cylinders.

'fold removed.

Having thus described my invention what I claim is Y 1.' In a motor car having a plurality of cylinders, an exhaust manifold common to all said cylinders and connected thereto, a

- muffler connected with said manifold, said manifold having ports substantially opposite the exhaustports of the engine whereby the cylinders'may exhaust directly intothe atmosphere, and valves for closing said ports in the manifold. l 2'. In a motor car an exhaust manifold, a suitable mufiler connected thereto, said manifold having discharge ports provided with suitable valve seats, a rock shaft in proximityto saidmanifold having arms corresponding to said ports, valves rotatably mounted on said arms with m ans, whereby they may be rotated while seate 611 the valve seats, and means "foroperating the ro ckshaft.

- 3. In a motor car an exhaust manifold, a suitable muflier connected thereto, a plurality of discharge ports opening laterally from said manifold, arock shaft journaled below said ports, curved arms on said rock shaft projecting into the ports, valves mounted on the ends of said arms, and means forrockmg open said exhaust ports: v

4. In a'motor car the combination with a plurality of engine cylinders, of an exhaust -manifold connected toYthe exhaust ports of '40 v sai'd" shaft to cause the" arms to carry the;

valves into the bottom" of the manifold to said cylinders and having-discharge ports substantially opposite said exhaust ports of the engine whereby the cylinders may exhaust directly into the atmosphere valves for normally closing said ports, said valves being arranged to swing into the manifold out of line with the exhaust and means for simultaneously operating all said valves.

In testimony whereof, I aflix my signature in presence of two witnesses.

I LEE SCHADWICK. 'Witnesses:

, F. A. BELLOWS, Jesse B. EVANS.

say 

